In the world I am not sure, but until about 1917 only France, Switzerland, San Marino and Portugal were republics in Europe, every other nation was a monarchy (and Germany had all those princely states). With the exception of the US and Latin America I think most other nations had some form of a monarchy.

Go back pre-Napoleon and there were over 300 German states and all the Italian states pre-unification existed as well. At that time Portugal was still a monarchy and even back into the mid-1700s all of Europe, except Switzerland - but some of the eastern countries which later had monarchies were under the Ottomans so no monarchy of their own but there were also the numerous Indian states with their own monarchy as well at that time and America was also still a monarchy.

Go back pre-Napoleon and there were over 300 German states and all the Italian states pre-unification existed as well. At that time Portugal was still a monarchy and even back into the mid-1700s all of Europe, except Switzerland - but some of the eastern countries which later had monarchies were under the Ottomans so no monarchy of their own but there were also the numerous Indian states with their own monarchy as well at that time and America was also still a monarchy.

I agree, and Asia had lots of monarchies, Kingdoms and Empires. I think that time was the time with the most monarchies in the world.
Continent wise, the America continents are the ones with the least number of monarchies, mostly colonies, etc...

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